Signal amplification means

Details Signal amplification means Signal amplification means

1978-06-20

1980-04-22

Myhre, Charles J.

Internal-combustion engines

Noncompression

307361, F02B 300

Patent

active

041989341

ABSTRACT:
In an electronic fuel injection system for internal combustion engines a voltage multiplier is used to amplify a manifold absolute pressure signal by an amplification factor which is related to throttle position. A dc voltage related to throttle position is converted to a digital signal which controls a bilateral switch which in turn regulates the feed back resistance in an operational amplifier thus regulating the operational amplifier amplification factor. The manifold absolute pressure signal is amplified by the operational amplifier. The resultant signal determines the fuel injector open time.

REFERENCES:
patent: 3458721 (1969-07-01), Maynard
patent: 3458821 (1969-07-01), Clarridge
patent: 3504521 (1970-04-01), Luckers
patent: 3652945 (1972-03-01), Nakane et al.
patent: 3707950 (1973-01-01), Schlimme
patent: 3724430 (1973-04-01), Adler
patent: 3877025 (1975-04-01), Maio
patent: 3887875 (1975-06-01), Shearer et al.
patent: 3970774 (1976-07-01), Bazin et al.
patent: 4032797 (1977-06-01), Metcalf et al.
patent: 4039859 (1977-08-01), Horninger

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